Cracked Bars

After I cut 3/4" off the each end of my bars (Renthal aluminums) I noticed a crack on the throttle side end. It began about 1/2" from the end of the bar and ran about 3" up the length of the bar. I don't remember seeing it there before I cut (with tube cutter) but it may have been. The end of the throttle tube was broken off so I know it took a hard hit at some point.

Anyone ever seen anything like this? I guess maybe the aluminum was fatigued already and cutting it was the final straw? I have an Email into Renthal to see what they say.

It sounds like you wrenched the cutter too tight without letting it do the cutting and smashed the bar.

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